KR101763747B1 - Method and system for bluetooth communication - Google Patents

Method and system for bluetooth communication Download PDF

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Publication number
KR101763747B1
KR101763747B1 KR1020100080325A KR20100080325A KR101763747B1 KR 101763747 B1 KR101763747 B1 KR 101763747B1 KR 1020100080325 A KR1020100080325 A KR 1020100080325A KR 20100080325 A KR20100080325 A KR 20100080325A KR 101763747 B1 KR101763747 B1 KR 101763747B1
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KR
South Korea
Prior art keywords
electronic device
external electronic
bluetooth
authentication information
signal
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KR1020100080325A
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Korean (ko)
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KR20120017617A (en
Inventor
고명근
민이규
이경구
손병일
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삼성전자 주식회사
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Priority to KR1020100080325A priority Critical patent/KR101763747B1/en
Publication of KR20120017617A publication Critical patent/KR20120017617A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W12/00Security arrangements, e.g. access security or fraud detection; Authentication, e.g. verifying user identity or authorisation; Protecting privacy or anonymity ; Protecting confidentiality; Key management; Integrity; Mobile application security; Using identity modules; Secure pairing of devices; Context aware security; Lawful interception
    • H04W12/02Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00Network architectures or network communication protocols for network security
    • H04L63/04Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
    • H04L63/0428Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
    • H04L63/0492Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload by using a location-limited connection, e.g. near-field communication or limited proximity of entities
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00Network architectures or network communication protocols for network security
    • H04L63/18Network architectures or network communication protocols for network security using different networks or paths for security, e.g. using out of band channels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W12/00Security arrangements, e.g. access security or fraud detection; Authentication, e.g. verifying user identity or authorisation; Protecting privacy or anonymity ; Protecting confidentiality; Key management; Integrity; Mobile application security; Using identity modules; Secure pairing of devices; Context aware security; Lawful interception
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W12/00Security arrangements, e.g. access security or fraud detection; Authentication, e.g. verifying user identity or authorisation; Protecting privacy or anonymity ; Protecting confidentiality; Key management; Integrity; Mobile application security; Using identity modules; Secure pairing of devices; Context aware security; Lawful interception
    • H04W12/003Secure pairing of devices, e.g. bootstrapping a secure communication link between pairing terminals; Secure socializing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W12/00Security arrangements, e.g. access security or fraud detection; Authentication, e.g. verifying user identity or authorisation; Protecting privacy or anonymity ; Protecting confidentiality; Key management; Integrity; Mobile application security; Using identity modules; Secure pairing of devices; Context aware security; Lawful interception
    • H04W12/04Key management, e.g. by generic bootstrapping architecture [GBA]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W12/00Security arrangements, e.g. access security or fraud detection; Authentication, e.g. verifying user identity or authorisation; Protecting privacy or anonymity ; Protecting confidentiality; Key management; Integrity; Mobile application security; Using identity modules; Secure pairing of devices; Context aware security; Lawful interception
    • H04W12/06Authentication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/14Direct-mode setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W12/00Security arrangements, e.g. access security or fraud detection; Authentication, e.g. verifying user identity or authorisation; Protecting privacy or anonymity ; Protecting confidentiality; Key management; Integrity; Mobile application security; Using identity modules; Secure pairing of devices; Context aware security; Lawful interception
    • H04W12/005Context aware security
    • H04W12/00503Location or proximity aware, e.g. using proximity to other devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W12/00Security arrangements, e.g. access security or fraud detection; Authentication, e.g. verifying user identity or authorisation; Protecting privacy or anonymity ; Protecting confidentiality; Key management; Integrity; Mobile application security; Using identity modules; Secure pairing of devices; Context aware security; Lawful interception
    • H04W12/005Context aware security
    • H04W12/00504Ambient aware, e.g. using captured environmental data
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/18Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

The present invention relates to a Bluetooth communication method and system capable of quickly connecting a Bluetooth communication device to another Bluetooth device that uses a sound signal to connect the Bluetooth communication device and performing data transmission, A first Bluetooth device which converts the audio signal into an audio signal and transmits the audio signal; And a second Bluetooth device that receives the sound signal, extracts the authentication information from the sound signal, and connects the Bluetooth communication channel with the first Bluetooth device using the extracted authentication information.

Description

[0001] METHOD AND SYSTEM FOR BLUETOOTH COMMUNICATION [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a Bluetooth communication method and system, and more particularly, to a Bluetooth communication method and system capable of rapidly connecting Bluetooth communication with another Bluetooth device to connect Bluetooth communication using a sound signal, .

Recently, due to the remarkable development of information communication technology and semiconductor technology, the spread and use of mobile terminals are rapidly increasing. In particular, recent mobile terminals have reached the stage of mobile convergence, which does not stay in the conventional inherent domain but covers other terminals. Typically, in the case of a mobile communication terminal, in addition to general communication functions such as voice communication and message transmission / reception, a TV broadcasting function (for example, a mobile broadcasting such as a DMB (Digital Multimedia Broadcasting) or a DVB (Digital Video Broadcasting) MP3 (MPEG Audio Layer-3), photo shooting function, Internet access function, and short-range wireless communication function.

The term short-range wireless communication refers to a communication standard that enables a bidirectional communication by connecting a computer, a portable terminal, a home appliance, Zigbee, infrared communication, Bluetooth and the like are typical examples of the short-range wireless communication. The Bluetooth supports the function of sending and receiving voice and data to / from various electronic devices wirelessly using RF (Radio Frequency) of 2.45GHz Industrial Scientific Medical (ISM) band which does not require a wireless license.

A device supporting the Bluetooth function (hereinafter referred to as a Bluetooth device) must perform a pairing process to form a communication channel with another Bluetooth device. In detail, the Bluetooth device broadcasts an inquiry message through a Bluetooth antenna so that other Bluetooth devices in the vicinity can receive the Bluetooth message. Then, the Bluetooth device receives an inquiry response message in response to the inquiry message from other nearby Bluetooth devices that have received the inquiry message. The inquiry response message includes authentication information (e.g., a unique address (BD_ADDR) of a Bluetooth module) necessary for forming a Bluetooth communication channel. Next, the Bluetooth device transmits a Name Request message to the searched neighboring bluetooth devices, and receives a device name from the neighboring bluetooth devices in response thereto. Thereafter, the Bluetooth device displays the device name and unique address of the searched peripheral Bluetooth devices on the display unit. The user can select one of the peripheral Bluetooth devices displayed on the display unit of the Bluetooth device and form a Bluetooth communication channel with the other Bluetooth device. The conventional Bluetooth communication method of transmitting data after forming a communication channel through the above-described procedure may be complicated and difficult for a general user. In addition, since the conventional Bluetooth device transmits an inquiry message for a predetermined time to search for a Bluetooth device that can be connected, unnecessary time may be wasted.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a Bluetooth communication method and system capable of rapidly performing a Bluetooth communication connection between Bluetooth devices using an acoustic signal .

Another object of the present invention is to provide a Bluetooth communication method and system that can easily transmit contents by providing a simple and intuitive Bluetooth communication connection method.

It is still another object of the present invention to provide a Bluetooth communication method and system that can provide a simple and intuitive Bluetooth communication connection method to improve user convenience.

According to another aspect of the present invention, there is provided a Bluetooth communication method including: a first Bluetooth device converting authentication information required for a Bluetooth communication connection into an acoustic signal and transmitting the acoustic signal through a speaker; The second Bluetooth device receiving the authentication information converted into the acoustic signal through the microphone; Extracting the authentication information from the acoustic signal by the second Bluetooth device; Transmitting the Bluetooth communication connection request signal to the second Bluetooth device using the extracted authentication information; Transmitting, by the first Bluetooth device, a response signal to the Bluetooth communication connection request signal to the second Bluetooth device; And forming a Bluetooth communication channel between the first Bluetooth device and the second Bluetooth device upon receiving the response signal.

According to an aspect of the present invention, there is provided a Bluetooth communication system including a first Bluetooth device for converting authentication information required for a Bluetooth communication connection into an acoustic signal and transmitting the acoustic signal; And a second Bluetooth device that receives the sound signal, extracts the authentication information from the sound signal, and connects the Bluetooth communication channel with the first Bluetooth device using the extracted authentication information.

As described above, according to the Bluetooth communication method and system according to the embodiment of the present invention, it is possible to quickly and easily form the Bluetooth communication channel using the acoustic signal. Thus, the user can easily transmit the content. In addition, the present invention can search for a plurality of Bluetooth devices in the Bluetooth communication connection and omit a complex process of selecting any one of the searched devices, thereby improving convenience for the user.

1 is a schematic view of a Bluetooth communication system according to an embodiment of the present invention.
2 is a block diagram schematically showing a configuration of a Bluetooth device according to an embodiment of the present invention.
3 is a flowchart illustrating a Bluetooth communication method of a Bluetooth communication system according to an embodiment of the present invention.
4 is a flowchart illustrating a Bluetooth communication method of a first Bluetooth device driven in a transmission mode according to an embodiment of the present invention.
5 is a flowchart illustrating a Bluetooth communication method of a second Bluetooth device driven in a reception mode according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that, in the drawings, the same components are denoted by the same reference numerals as possible. Further, the detailed description of known functions and configurations that may obscure the gist of the present invention will be omitted.

It should be noted that the embodiments of the present invention disclosed in the present specification and drawings are only illustrative of the present invention in order to facilitate the understanding of the present invention and are not intended to limit the scope of the present invention. It is to be understood by those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

Hereinafter, a Bluetooth device according to an embodiment of the present invention supports a Bluetooth communication function. The Bluetooth device includes a mobile communication terminal, a personal digital assistant (PDA), a smart phone, a personal computer (PC) (Notebook), a netbook, a portable multimedia player (PMP), a PSP, a headset, a navigation terminal, a TV (TeleVision), and the like.

1 is a schematic view of a Bluetooth communication system according to an embodiment of the present invention.

Referring to FIG. 1, a Bluetooth communication system according to an embodiment of the present invention may include a first Bluetooth device 100 and a second Bluetooth device 200. The first Bluetooth device 100 and the second Bluetooth device 200 may be driven in a transmission mode or a reception mode. Hereinafter, for convenience of explanation, the first Bluetooth device 100 operates in a transmission mode and the second Bluetooth device 200 operates in a reception mode.

The first Bluetooth device 100 converts authentication information (for example, a unique address (BT_ADDR) and a password of a Bluetooth module) required for a Bluetooth communication connection into a sound signal and transmits the authentication information to the speaker 142 ). ≪ / RTI > At this time, the first Bluetooth device 100 may mix or mask the sound signal converted from the authentication information with another sound source and transmit the sound signal. This is to prevent the acoustic signal obtained by converting the authentication information from being uncomfortable to the user. When the first Bluetooth device 100 receives a Bluetooth communication connection request signal from the second Bluetooth device 200, the first Bluetooth device 100 transmits a response signal to the second Bluetooth device 200 in response to the Bluetooth communication connection request signal, Channels can be connected. The first Bluetooth device 100 set in the transmission mode transmits the content (photo, music file, video file, phone book, etc.) selected by the user via the Bluetooth communication channel to the second Bluetooth device 200, Lt; / RTI >

The second Bluetooth device 200 can activate the microphone 241 to receive the sound signal transmitted from the first Bluetooth device 100 when the receiving mode is executed. Then, the second Bluetooth device 200 may extract authentication information for forming a Bluetooth communication channel with the first Bluetooth device 100 from the received sound signal. The second Bluetooth device 200 may transmit a Bluetooth communication connection request signal to the first Bluetooth device 100 using the extracted authentication information. When receiving a response signal for the Bluetooth communication connection request signal from the first Bluetooth device 100, the second Bluetooth device 200 may establish a Bluetooth communication channel with the first Bluetooth device 100. [ The second Bluetooth device 200 can receive the content transmitted by the first Bluetooth device 100 via the Bluetooth communication channel.

The Bluetooth communication system according to the embodiment of the present invention searches for a plurality of conventional Bluetooth devices, omits the pairing process of selecting any of the searched devices, and quickly and easily uses the Bluetooth communication channel You can connect. Therefore, the present invention can improve the convenience of the user. In addition, a pairing procedure requiring a complicated process can be omitted, and a Bluetooth communication channel can be connected, thereby facilitating the content transmission.

While the first Bluetooth device 100 operates in the transmission mode and the second Bluetooth device 200 operates in the reception mode, the present invention is not limited thereto. That is, in the present invention, the first Bluetooth device 100 operates in a reception mode and the second Bluetooth device 200 operates in a transmission mode.

2 is a block diagram schematically showing a configuration of Bluetooth devices 100 and 200 according to an embodiment of the present invention.

Referring to FIG. 2, the first Bluetooth device 100 and the second Bluetooth device 200 according to the embodiment of the present invention include a controller 110/210, a storage unit 120/220, a display unit 130/230 An audio processing unit 140/240, a Bluetooth module 150/250, and a sensor unit 160/260. The control unit 110/210 may include an authentication information conversion unit 111/211 and an authentication information restoration unit 112/212. The sensor unit 160/260 may include a motion sensor 161/261 and a proximity sensor 162/262. The components of the first Bluetooth device 100 and the second Bluetooth device 200 having the same configuration are distinguished through the first digit of the identification code. For example, the reference numerals 110 to 162 indicate components of the first Bluetooth device 100, and the reference numerals 210 to 262 indicate components of the second Bluetooth device 200. Hereinafter, for convenience of explanation, the first Bluetooth device 100 and the second Bluetooth device 200 are not distinguished from each other unless the functions are changed according to the reception mode and the transmission mode.

The display unit 130/230 displays various menus of the Bluetooth devices 100 and 200 as well as information input by the user or information provided to the user. That is, the display unit 130/230 can provide various screens such as an idle screen, a menu screen, a message creation screen, a call screen, and the like according to the use of the Bluetooth devices 100 and 200. In particular, the display unit 130/230 of the present invention can display a menu screen related to the Bluetooth communication connection, a Bluetooth communication execution screen, a message output screen informing of the Bluetooth connection failure, and the like. The display unit 130/230 may be a liquid crystal display (LCD), an organic light emitting diode (OLED), or an active matrix organic light emitting diode (AMOLED). Also, when the display unit 130/230 is formed as a touch screen, the display unit 130/230 may perform functions of an input unit (not shown).

The Bluetooth module 150/250 supports Bluetooth communication between the Bluetooth devices 100 and 200. The Bluetooth module 150/250 forms a Bluetooth communication channel with any other Bluetooth device under the control of the controller 110/210 to perform data communication. The Bluetooth module 150/250 supports Hands-Free Profile (HFP) to support a hands-free set, HSP (HeadSet Profile) to support a headset, File Transfer Profile (FTP) And a CTP (Cordless Telephone Profile). When the Bluetooth devices 100 and 200 operate in the receiving mode, the Bluetooth module 150/250 transmits Bluetooth communication to other Bluetooth devices using the authentication information extracted from the sound signals received through the microphones 141/241 Transmits a connection request signal, and receives a response signal for the Bluetooth communication connection request signal from the other Bluetooth device.

When the Bluetooth device (100, 200) operates in the transmission mode, the Bluetooth module (150/250) receives a Bluetooth communication connection request signal from another Bluetooth device and transmits a response signal to the Bluetooth communication connection request signal It can be transmitted to the Bluetooth device. Thereafter, when the Bluetooth communication is connected, the Bluetooth module 150/250 can transmit content to another Bluetooth device under the control of the controller 110/210.

The storage unit 120/220 includes an operating system (OS) of the Bluetooth devices 100 and 200 and application programs necessary for other options functions such as a sound playback function, , Content (photographs, music files, moving picture files) to be transmitted to the other Bluetooth devices through the user data and the Bluetooth module 150/250, contents received through the Bluetooth module 150/250, and the like. The storage unit 120/220 may store authentication information. The authentication information may be a unique address (BD_ADDR) of the Bluetooth module. The authentication information may include password information when the Bluetooth devices 100 and 200 request a password for a Bluetooth communication connection. The storage unit 120/220 may include a program for converting the authentication information into a sound signal according to a predetermined rule and a program for restoring the sound signal to authentication information. The storage unit 120/220 may include a RAM, a ROM, a flash memory, and the like. The storage unit 120/220 may be composed of one memory or two memories, for example, a multi chip package (MCP) memory, each of which is constituted or integrated with a RAM, a ROM or a flash memory.

The audio processing unit 140/240 transmits an audio signal to the speaker 142/242 or transmits an audio signal input from the microphone 141/241 to the controller 110/210. That is, the audio processing unit 140/240 converts the analog audio signal input from the microphone 141/241 into a digital audio signal and transmits the digital audio signal to the control unit 110/210, or converts the digital audio signal into an analog audio signal And outputs it through the speaker 142/242. In addition, the audio processing unit 140/240 may output a key input sound stored in the storage unit 120/220, a different effect sound, a music file (e.g., MP3) playback sound, or the like. In particular, when the Bluetooth devices 100 and 200 are driven in the transmission mode, the audio processing unit 140/240 according to the present invention can transmit the acoustic signals generated by converting the authentication information through the speakers 142/242 have. When the Bluetooth devices 100 and 200 are operated in the reception mode, the audio processing unit 140/240 receives the sound signals through the microphones 141/241, To the information restoring unit 112/212. In addition, the audio processing unit 140/240 may output an effect sound to notify when a Bluetooth connection using a sound signal fails.

The sensor unit 160/260 may include a motion sensor 161/261 and a proximity sensor 162/262. The motion sensor 161/261 is a sensor for sensing the movement of the Bluetooth devices 100 and 200. In particular, the motion sensor 161/261 according to the present invention can generate a signal requesting execution of a transmission mode for content transmission. For example, when the user selects a content to be transmitted through the motion sensor 161/261 and then detects a predetermined motion such as a shaking motion or a tilting motion without performing a key operation, the controller 110/210 selects A transmission mode for transmitting the content can be executed. The motion sensor 161/261 may be an acceleration sensor, a gravity sensor, a geomagnetic sensor, or the like. If the content transmission function using motion is not provided, the motion sensor 161/261 may be omitted.

The proximity sensor 162/262 is a sensor capable of recognizing the presence and approach of an object without physical contact. Such a proximity sensor 162/262 may be a magnetic proximity sensor, an ultrasonic proximity sensor, an optical proximity sensor, an inductive proximity sensor, a capacitive proximity sensor, and the like. In particular, the proximity sensor 162 of the first Bluetooth device 100 according to the present invention senses the approach of the second Bluetooth device 200, and the proximity sensor 262 of the second Bluetooth device 200 senses the first So that the access of the Bluetooth device 100 can be detected. The proximity sensor 162/262 may be used to perform a Bluetooth communication connection using a sound signal when the first Bluetooth device 100 and the second Bluetooth device 200 are within a predetermined distance. This is because the second Bluetooth device 200, which is a receiving mode, can not receive an appropriate sound signal in a situation where external noise is severe. In order to prevent such a problem, when it is determined that the first Bluetooth device 100 and the second Bluetooth device 200 are located within a predetermined distance through the proximity sensor 162/262, the first Bluetooth device 100, which is a transmission mode, The second Bluetooth device 200, which is the receiving mode, can activate the microphone 241. In this case,

The control unit 110/210 may control the overall operation of the Bluetooth devices 100 and 200 and the signal flow between the internal blocks of the Bluetooth devices 100 and 200 and may perform a data processing function for processing data. In particular, the control unit 110/210 according to the present invention may include an authentication information conversion unit 111/211 and an authentication information restoration unit 112/212.

The authentication information converting unit 111/211 may convert the authentication information of the Bluetooth module 150/250 into a specific pattern sound signal when the Bluetooth devices 100 and 200 are driven in the transmission mode. The authentication information conversion unit 111/211 may mix other sound sources or apply a masking effect to the converted sound signals. This is to ensure that the acoustic signal transmitted through the speaker 142 of the first Bluetooth device 100 in the transmission mode provides comfort to the user or does not have a sense of rejection.

When the Bluetooth devices 100 and 200 are driven in the receiving mode, the authentication information restoring unit 112/212 extracts the authentication information from the sound signal received through the microphone 141/241 of the audio processing unit 140, / 250) can be extracted.

The controller 110/210 may control the Bluetooth module 150/250 to connect the Bluetooth communication using the extracted authentication information. When the Bluetooth communication is connected, the controller 110/210 may transmit the content to the Bluetooth device connected to the Bluetooth communication through the Bluetooth module 150/250. On the contrary, in the reception mode, the controller 110/210 can receive content through the Bluetooth module 150/250. The control unit 110/210 may control the display unit 130/230 or the audio processing unit 140/240 to output a message or effect sound when the transmission or reception of the content is completed.

2, the Bluetooth devices 100 and 200 include a wireless communication unit for performing a call function, a broadcast receiving module for receiving a broadcast, a camera module for capturing an image, and an Internet communication Modules, and the like. The Bluetooth devices 100 and 200 according to the present invention may be configured to have the same level of components as the above-mentioned components, As shown in FIG.

3 is a flowchart illustrating a Bluetooth communication method of a Bluetooth communication system according to an embodiment of the present invention.

Referring to FIG. 3, the first Bluetooth device 100 according to the embodiment of the present invention executes a transmission mode according to an input signal of an input unit (not shown) or a touch signal of a touch screen in step 301, The Bluetooth device 200 can execute the receiving mode in step 303. [ The transmission mode and the reception mode can be executed through menus included in the first Bluetooth device 100 and the second Bluetooth device 200, respectively. Alternatively, the transmission mode may be executed upon input of a signal corresponding to a predetermined motion from the motion sensor 161 of the first Bluetooth device 100 after content to be transmitted is selected. For example, after inputting a signal corresponding to a motion or a tilted motion from the motion sensor 161 of the first Bluetooth device 100 after the content is selected, the first Bluetooth device 100 determines that the transmission of the content is requested The transmission mode can be executed.

When the transmission mode is executed, the first Bluetooth device 100 may extract the authentication information for the Bluetooth communication connection from the storage unit 120 in step 305. The authentication information may include a unique address (BD_ADDR) and a password of the Bluetooth communication unit 150.

The first Bluetooth device 100 converts the authentication information extracted in step 307 into an acoustic signal having a specific pattern and transmits the acoustic signal through the speaker 142 of the audio processing unit 140 in step 309 . 3, when the first Bluetooth device 100 detects the approach of the second Bluetooth device 200 through the proximity sensor 161, the first Bluetooth device 100 activates the speaker 142 to transmit the sound signal . This is to prevent a power wastage caused by activating the speaker 142 and transmitting the sound signal in a situation where the second Bluetooth device 200, which is a receiving mode, can not receive the sound signal. At this time, the user accesses the first Bluetooth device 100 and the second Bluetooth device 200 so that the speaker 142 of the first Bluetooth device 100 and the microphone 242 of the second Bluetooth device 200 face each other . In addition, the first Bluetooth device 100 may mix or mask the preset sound source or the sound source selected by the user and the sound signal. This is because the acoustic signal obtained by converting the authentication information may be unpleasant to the user. For this, the first Bluetooth device 100 may include an authentication information conversion unit 111.

The second Bluetooth device 200 activates the microphone 241 in step 311 and determines whether an acoustic signal having a specific pattern is received from the microphone 241 in step 313 . If the sound signal is not received, the second Bluetooth device 200 may return to step 311. [ On the other hand, if the acoustic signal is received, the second Bluetooth device 200 may extract the authentication information from the acoustic signal received in step 315. [ For this, the second Bluetooth device 200 may include an authentication information restoring unit 212.

In step 317, the second Bluetooth device 200 may transmit the Bluetooth communication connection request signal to the first Bluetooth device 100 through the Bluetooth module 250 using the extracted authentication information. In step 319, the first Bluetooth device 100 receiving the Bluetooth communication connection request signal may transmit a response signal to the second Bluetooth device 200 in response to the Bluetooth communication connection request signal. When the second Bluetooth device 200 receives a response signal, the second Bluetooth device 200 may form a Bluetooth communication channel with the first Bluetooth device 100 in step 321. [ The first Bluetooth device 100 may transmit the content requested to be transmitted through the Bluetooth module 150 to the second Bluetooth device 200 in step 323.

4 is a flowchart illustrating a Bluetooth communication method of a first Bluetooth device 100 operating in a transmission mode according to an embodiment of the present invention.

Referring to FIG. 4, the controller 110 of the first Bluetooth device 100 may execute a transmission mode according to an input signal of an input unit (not shown) or a touch signal input of a touch screen in step 401. The transmission mode is a mode for transmitting content to the second Bluetooth device 200. [ The transmission mode may be executed through a menu or upon input of a signal corresponding to a predetermined motion from the motion sensor 161. [ For example, the transmission mode may be executed upon input of a signal corresponding to a motion shaking from the motion sensor 161, a motion of tilting the first Bluetooth device 100 in a specific direction, or the like. Meanwhile, the user can select the content to be transmitted after executing the transmission mode after selecting the content to be transmitted, or by activating the transmission mode through the menu included in the first Bluetooth device 100.

When the transmission mode is executed, the controller 110 may extract the authentication information for the Bluetooth communication connection from the storage unit 120 in step 403. The authentication information may include a unique address of the Bluetooth module. Also, when the first Bluetooth device 100 has a password for a Bluetooth communication connection, the authentication information may include a password. The controller 110 may convert the authentication information extracted in step 405 into an acoustic signal. For this, the control unit 110 may include an authentication information conversion unit 111. For example, the authentication information converting unit 111 may convert the extracted authentication information into an acoustic signal having a specific pattern (for example, an acoustic signal of 8 kHz) according to a predetermined rule. Meanwhile, although not shown, the authentication information converting unit 111 may mix or mask the predetermined sound source to the converted sound signal. This is because the acoustic signal generated by converting the authentication information according to predetermined rules may cause unpleasantness to the user. Here, the method of converting the authentication information into a sound signal, the mixing method, and the masking method are well known and will not be described in detail.

When the conversion of the authentication information is completed, the controller 110 may convert the authentication information through the speaker 142 of the audio processing unit 140 in step 407 and transmit the generated sound signal. Meanwhile, the control unit 110 according to another embodiment of the present invention may transmit an acoustic signal when a signal informing the access of the second Bluetooth device 200 from the proximity sensor 162 is input. This is to prevent the first Bluetooth device 100 from unnecessarily transmitting an acoustic signal even in a situation where the second Bluetooth device 200 can not receive a sound signal. For example, when the distance between the first Bluetooth device 100 and the second Bluetooth device 200 is long or the external noise is excessive and the second Bluetooth device 200 can not receive the sound signal, Transmitting the acoustic signal by the Bluetooth device 100 may cause unnecessary power wastage. At this time, the user can select the speaker 142 of the first Bluetooth device 100 and the speaker 142 of the first Bluetooth device 100 so that the second Bluetooth device 200 can receive a sound signal having a high quality signal-noise ratio, 2 It is preferable that the second Bluetooth device 200 is brought close to the first Bluetooth device 100 so that the microphone 241 of the Bluetooth device 200 faces.

Next, the controller 110 activates the Bluetooth module 150 in step 409 to check whether a signal requesting the Bluetooth communication connection from the second Bluetooth device 200 is received. If the Bluetooth communication connection request signal is not received, the control unit 110 may maintain step 407. If the Bluetooth connection request signal is not received for a predetermined period of time, the control unit 110 outputs a message to the display unit 130 indicating that the Bluetooth communication connection has failed, or the speaker 142 of the audio processing unit 140, It is possible to output a predetermined sound effect through the < RTI ID = 0.0 > On the other hand, when the Bluetooth communication connection request signal is received, the controller 110 transmits a response signal to the second Bluetooth device 200 through the Bluetooth module 150 in step 411, and transmits the Bluetooth communication channel to the second Bluetooth device 200 in step 413. [ . Also, although not shown, the control unit 110 may stop the sound transmission through the speaker 142 when the Bluetooth communication connection request signal is received.

If the Bluetooth communication channel is formed, the controller 110 may transmit the content requested to be transmitted to the second Bluetooth device 200 through the Bluetooth module 150 in step 415. [ In step 417, the controller 110 determines whether the content transmission is completed. If the transmission of the content is not completed, the controller 110 returns to step 415 to continue the content transmission. On the other hand, if the content transmission is completed, the controller 110 may terminate the Bluetooth communication connection in step 419. [ At this time, the control unit 110 may output a message to the display unit 130 indicating that the transmission of the content is completed or may output the sound effect through the speaker 142 of the audio processing unit 140. Alternatively, when the content transmission is completed, the controller 110 may control the display unit 130 to output a pop-up window for confirming whether or not the Bluetooth communication connection with the second Bluetooth device 200 is terminated. At this time, the user can select to terminate the Bluetooth communication connection when there is no content to be transmitted, and to maintain the connection of the Bluetooth communication channel when the content to be transmitted exists.

5 is a flowchart illustrating a Bluetooth communication method of a second Bluetooth device 200 operating in a receiving mode according to an embodiment of the present invention.

Referring to FIG. 5, the controller 210 of the second Bluetooth device 200 may detect the reception mode in step 501. The controller 210 activates the microphone 241 of the audio processor 240 in step 503 and transmits an acoustic signal having a specific pattern through the microphone 241 in step 505 Can be confirmed.

If the sound signal is not received, the control unit 210 may return to step 503. [ On the other hand, when the sound signal is received, the controller 210 may extract authentication information for connecting the Bluetooth communication with the first Bluetooth device 100 from the sound signal received in step 507. [ For this, the control unit 210 may include an authentication information restoration unit 112.

Upon completion of the extraction of the authentication information, the controller 210 transmits a Bluetooth communication connection request signal to the first Bluetooth device 100 using the authentication information extracted in step 509, and transmits the Bluetooth communication connection request signal to the first Bluetooth device 100 to receive a response signal for the Bluetooth communication connection request signal. If the response signal is not received, the controller 210 may return to step 509. FIG. At this time, if the response signal is not received for a predetermined period of time (for example, 15 seconds), the controller 210 outputs a message to the display unit 230 indicating that the Bluetooth communication connection has failed or indicates that the Bluetooth communication connection has failed Can be output through the speaker 242. On the other hand, when the response signal is received, the controller 210 forms a Bluetooth communication channel with the first Bluetooth device 100 in step 513. If the Bluetooth communication channel is established with the first Bluetooth device 100, the controller 210 can receive the content transmitted from the first Bluetooth device 100 through the Bluetooth module 250 in step 515.

The Bluetooth communication method according to an embodiment of the present invention as described above may be implemented in the form of a program command that can be executed through various computer means and recorded in a computer-readable recording medium. At this time, the computer readable recording medium may include a program command, a data file, a data structure, or the like, alone or in combination. On the other hand, the program instructions recorded on the recording medium may be those specially designed and configured for the present invention or may be available to those skilled in the art of computer software.

The computer-readable recording medium includes magnetic media such as a hard disk, a floppy disk and a magnetic tape, an optical medium such as a CD-ROM and a DVD, and a magnetic recording medium such as a floppy disk. Optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. The program instructions also include machine language code, such as those generated by the compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. And the present invention is not limited to the above-described embodiments. That is, it is apparent to those skilled in the art that various embodiments based on the technical idea of the present invention are possible.

100: first Bluetooth device 200: second Bluetooth device
110/210: control unit 111/211: authentication information conversion unit
112/212: authentication information restoring unit 120/220:
130/230: Display section 140/240: Audio processing section
141/241: Microphone 142/242: Speaker
150/250: Bluetooth module 160/260: Sensor part
161/261: Motion sensor 162/262: Proximity sensor

Claims (12)

  1. A communication method of an electronic device,
    Determining whether an external electronic device is located within a predetermined distance through the proximity sensor before transmitting the acoustic signal;
    Converting authentication information required for communication connection with the external electronic device to the acoustic signal when it is determined that the external electronic device is located within a predetermined distance;
    Transmitting the converted sound signal through a speaker;
    Receiving a communication connection request signal from the external electronic device; And
    And forming a communication channel with the external electronic device.
  2. The method according to claim 1,
    Further comprising transmitting the content to the external electronic device via the communication channel.
  3. The method according to claim 1,
    The operation of transmitting the converted sound signal through a speaker is performed by a speaker
    And when a transmission mode for transmitting the content to the external electronic device is executed.
  4. The method of claim 3,
    The transmission mode is
    And when a signal corresponding to a predetermined motion is input from the motion sensor.
  5. The method of claim 3,
    Wherein the determining whether the external electronic device is located within a predetermined distance through the proximity sensor includes:
    And when the transmission mode is executed.
  6. The method according to claim 1,
    The operation of converting the authentication information into an acoustic signal includes:
    Further comprising mixing or masking an acoustic signal obtained by converting the authentication information and another sound source.
  7. A communication method of an electronic device,
    Determining whether an external electronic device is located within a predetermined distance through the proximity sensor before receiving the acoustic signal;
    Receiving authentication information of the external electronic device converted into the acoustic signal through a microphone when it is determined that the external electronic device is located within a predetermined distance;
    Extracting authentication information of the external electronic device from the acoustic signal;
    Transmitting a communication connection request signal to the external electronic device using the extracted authentication information of the external electronic device; And
    And forming a communication channel with the external electronic device.
  8. In an electronic device,
    Proximity sensor;
    speaker;
    Bluetooth module; And
    And a control unit,
    Wherein,
    Determining whether an external electronic device is located within a predetermined distance through the proximity sensor before transmitting the acoustic signal,
    Converts the authentication information required for communication connection with the external electronic device into the acoustic signal when it is determined that the external electronic device is located within a predetermined distance,
    Transmitting the converted acoustic signal through the speaker,
    Receives a communication connection request signal from the external electronic device through the Bluetooth module,
    And forms a communication channel with the external electronic device.
  9. 9. The method of claim 8,
    Wherein,
    And transmits the content to the external electronic device via the communication channel.
  10. 9. The method of claim 8,
    Wherein,
    And transmits the converted acoustic signal via the speaker when a transmission mode for transmitting the contents to the external electronic device is executed.
  11. 11. The method of claim 10,
    Further comprising a motion sensor,
    Wherein,
    And executes the transmission mode when a signal corresponding to a predetermined motion is received from the motion sensor.
  12. In an electronic device,
    Proximity sensor;
    MIC;
    Bluetooth module; And
    And a control unit,
    Wherein,
    Determining whether an external electronic device is located within a predetermined distance through the proximity sensor before receiving the acoustic signal,
    Receiving authentication information of the external electronic device converted into a sound signal through the microphone when it is determined that the external electronic device is located within a predetermined distance,
    Extracting authentication information of the external electronic device from the acoustic signal,
    Transmitting the communication connection request signal to the external electronic device via the Bluetooth module using the extracted authentication information of the external electronic device,
    And forms a communication channel with the external electronic device.
KR1020100080325A 2010-08-19 2010-08-19 Method and system for bluetooth communication KR101763747B1 (en)

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US13/194,302 US8934841B2 (en) 2010-08-19 2011-07-29 Bluetooth communication method and system
US14/582,850 US9271314B2 (en) 2010-08-19 2014-12-24 Bluetooth communication method and system

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US20150111500A1 (en) 2015-04-23
US9271314B2 (en) 2016-02-23
US8934841B2 (en) 2015-01-13
KR20120017617A (en) 2012-02-29

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